Found a pretty goofy exploit. Most definitely a bug; made a thread on the bugs section about it.
So, you can use a vacutainer to draw blood from a corpse. For most part, the blood is considered human flesh, even mi-gos. However, undead and mi-go blood is also poisonous. That's not the goofy part.
You can draw an infinite amount of blood. Rather tedious, but possible. You can also draw blood from your survivor, and can do so an infinite number of times as well, with no real drawback.
Blood has five nutrition and five quench, and -50 enjoyability. However, here's the kicker: with cannibal, spiritual, and optimist (and maybe gourmand), you get more morale than you lose, so you end up with an infinite source of food and water, providing enjoyment to your character to boot.
It's unhealthy, however. The temporary health stat takes a hit, but if you've got the leukocyte breeder bionic it's not a problem at all.